Bedrock geology is a vast subject. Of greatest interest to naturalists are ways in which underlying rock types, alignments, fracture patterns, and variable resistance to erosion explain the shape of the land and the distribution of natural communities.

Here are some of the common bedrock types of Southeast Alaska.

Bedrock Geology

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Auke Lake Trail Interpretive Signs

This three-part sign array offers information on the natural history, geology, and bio-culture of the Auke Lake Trail. You can download the three signs below:

Introduction (3MB): PDF_Download

Geology (2MB): PDF_Download

Bioculture (2MB): PDF_Download

 

Bedrock Geology Map

Bedrock Geology Map

From Richard Carstensen:

Bedrock geology is a vast subject. Of greatest interest to naturalists are ways in which underlying rock types, alignments, fracture patterns, and variable resistance to erosion explain the shape of the land and the distribution of natural communities.

Here is a map of Bedrock geology. Units are based upon a detailed map-in-progress by USGS, but color coded by 6 broad rock-type families. Expand the legend (>>, upper left) to see them. Notice that granitic types (pink, our highest & most resistant peaks) are mostly back under the icefield. Rocks with highest carbonate content (blue) hosted most of Juneau’s successful mines. For more info on each rock unit, click, and a popup will name the geologic period (capital letters in the code), dominant rocks, and broader rock family

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Cowee-Davies Watershed Brochure

This brochure gives you a brief introduction to the natural history of the Cowee Davies watershed.  You’ll find information about forests, fish, Tlingit history, and more.

Download Here (991kB): PDF_Download

 

 

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Mendenhall Glacier: Aerial Perspectives

This booklet of maps and images spanning the past century shows the Mendenhall Glacier’s retreat and the forest succession, while also providing information on the area’s geology.  The Mendenhall Glacier was the destination selected by the Glacier habitat group of the STREAM: Pedagogy of Place Institute, July 17-19, 2013.  You’ll find information about bedrock geology and surficial geology, and you’ll also find historical photographs of the Mendenhall.

Download Here (5MB): PDF_Download

 

 

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Montana Creek Interpretive Signs

This three-part sign array offers information on the natural history, geology, and bio-culture of Montana Creek. You can download the three signs below:

Introduction (2.3MB):PDF_Download

Geology (1.5MB):PDF_Download

Bioculture (2.7MB):PDF_Download

 

Gold Creek

Natural History of Gold Creek Watershed

This guide to the Gold Creek Watershed is part of a series by Richard Carstensen on Juneau watersheds.  It explains some of the unique forces influencing the area, from avalanches, to geologic faults, to human development.

Download here (794 k): PDF_Download

 

Natural History of Juneau

Natural History of Juneau Trails: A Watershed Approach

$24.00

If you or someone on your gift list enjoys Juneau’s outdoors, this book is for you.  It is packed with information for the hiker, hunter, or any student of the outdoors.  Richard’s insightful text, full color maps, and dozens of recent and historic photographs explain the landforms, water features, and natural environments Juneau residents navigate every day.  Dive in for a whole new understanding of the areas you love to explore, with one of Southeast Alaska’s foremost naturalists.

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Pond & Davies at Echo Cove

This booklet guides the reader through Alaska State Library's collection of historic photos of the Echo Cove area by turn-of-the-century miners Percy Pond and Lloyd Winter.  Carstensen describes and annotates the photos, putting them in historical, cultural, and natural contexts.  Originally used as enticing advertisements for prospective investors, these photographs are amazing windows into Juneau's past.

Download Here (8.7MB):PDF_Download

Reading Southeast Alaska's Landscape

Reading Southeast Alaska’s Landscape

$10.00

This book tells the constantly evolving story of geology in our region.  It tracks how bedrock forms, how glaciers wax and wane, and how rivers and the sea shape our land.  While the book offers a general introduction to bedrock and surficial geology, it also focuses in on regional geologic highlights.  It is a must-have for nature enthusiasts in Southeast.

 

 

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Spring 2011 Newsletter, Geology and life: Connections between the living and non-living world

In this newsletter, Richard Carstensen seeks to answer a seemingly simple question: how do living things respond to geologic landforms and rock types?  His essay explores the interactions between living and non-living things in Southeast Alaska.  You will also find Discovery News, and a short write-up by Scott Burton on the popular trail game Camouflage.

Download Here (1.1MB): PDF_Download